Wrench



H. M. MONTOOTH. WRENCH.

APPLICATION FILED DEC. 16, 1919.

1A34g139 Patented 00 5. 31, 19220 H1 Maniaatk.

Patented @ct. El, 1922.

U i i i ll I-IAFJEY M. IiIONTOQTH, OF NEJTAEK, NEW] wanncn. I

Application filed December 16, 1919.

T 0 all 'lU/ZOWL it may concern:

Be it known that I, HARRY M. MoN'rooTH, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Wrenches; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to new and useful improvements in wrenches of thetype employing a pivoted jaw and a slidable jaw and has for its primaryobject the provision of means which will have a tendency to move theslidable jaw in the direction of the pivoted jaw when a pull is made onthe handle in one direction and after the adjustment of the jaws to anobject, thereby causing said jaws to increase their gripping action onthe object as the pull on the handle is increased and further saidpivoted jaw will release its grip when the handle is moved in the otherdirection, thus permitting the jaws to obtain another grip on the objectwhich may be in the form of a pipe.

Another object of this invention is the provision of a wrench of theabove stated character, which shall be simple, durable and efiicient,and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as thedescription proceeds, the invention consists in certain novel featuresof construction, combination, and arrangement of parts as will behereinafter more fully described and claimed.

For a complete understanding of my in vention, reference is to be had tothe following description and accompanying drawing, in which Figure 1 isa side elevation of a wrench constructed in accordance with myinvention,

Figure 2 is a vertical sectional view of the same,

Figure 3 is a detail horizontal sectional View illustrating the means ofslidably conmeeting the sliding jaw to the pivoted jaw,

Figure 4C is a detail sectional view illustrating the spring bearingagainst the pivoted jaw.

Referring in detail to the drawing the Eerial No. 345,293.

numeral 1 indicates a handle having formed at one end a pair ofrelatively spaced ears between which is; pivoted one end of a pivotedjaw 3. The pivoted jaw 3 is provided with an active gripping face 4 atone end while its opposite end is reduced to form an ear 5 which ispivoted between the ears 2. The reduced end 5 is adapted to defineshoulders 6 which abut the edges of the ears 2 under the influence of aspring 7 secured to the handle 1 between the ears 2 and bears againstthe end of the extension 5. Relatively spaced guide elements 8 areformed upon the jaw S and slidably receive a sliding jaw 9 which isprovided with an active gripping face 10 and which cooperate with face 4in gripping an object. Angular flanges 11 are formed upon the elements 8to slidably retain the jaw 9 therein. The jaw 9 has formed thereon teeth12 adapted to be engaged by an adjusting nut 13. The handle 1 at its endwhich carries the ears 2 has formed thereon a forwardly extendinginclined extension 14 that terminates in close proximity to the slidingjaw 9 and carries a pin 15 on which is journaled the adjusting nut 18.The other end of the pin 15 is received within a recess or socket 16formed in the jaw 3. The elements 8 and the reduced end 5 of the jaw 3define a space 17 in which the adjusting nut 13 oper ates and mesheswith the teeth 12 on the sliding jaw 9. The pin 15 is slidable withinthe recess or socket 16 which permits the extension le to move in thedirection of the jaw 3 during the use of the device.

In operation, the jaws 8 and 9 are adjusted to a pipe or like object anda pull in one direction is made on the handle 1, which causes the latterto move on the pivot and this movement is transmitted to the jaw 9 bythe nut 13, which causes the jaw 9 to move towards the pivot jaw 3,thereby causing the jaws to increase their gripping action on the pipeor object as the pull on the handle is increased, A pull on the handlein an opposite direction causes the 3 to swing on its pivot against thetension of the spring thereby releasing the gripping action of said jawson the pipe or object permitting them to turn freely thereof with thehandle so as to permit the jaws to obtain another grip on the pipe orobject.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination, and arrangement of partsmay be made without departing fromthe spirit and scope of the inventionas claimed.

Having thus described my invention, whatI claim is A Wrench having ahandle provided with an offset extension member, a" pivoted'jaw s memberon said handle having a nut-receiving recess with an- 'open end acrosswhich saidextension is disposed, interfitting' and contacting shoulderson said members, said recess having its Walls angularly disposed,

anangularly disposed pin extending from one of said members into therecess, one of the walls at said recess having a socket for slipconnection with and support of the free end of said pin, a nut in saidrecess journaled on said pin, a jaw slidable on said pivoted jaw havingteeth in mesh with the nut, guide elements for the slidalole jaw 6X-tending from the pivoted jaw across said

